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Viral Diseases in Koi & Pond Fish

Most people think viruses would kill a mess of fish, or, on the other end of the spectrum, that viruses do not matter in Koi Health.

Both would be wrong. Carp Pox, for example, pictured at left, won't kill a fish unless it prevents them from eating (literally proliferates to wreck their mouths) and Koi Herpes Virus, on the other hand will kill 95% of exposed Koi.

So, understanding viruses could have some utility.

Koi Herpes Virus

Koi herpes Virus Primer
The basics of Koi Herpes Virus with a little discussion of Spring Viremia of Carp, thrown in. I'd suggest browsing this first. Once you have the jist of KHV, read the following which deal with most of the "other" aspects of KHV including treatment, etc.

Koi herpes Virus Disease Progression, Timeline
The course of the disease Koi Herpes Virus. Step by step, day by day the owner of an afflicted pond describes what she sees as the pond sprials down.

Koi Herpes Virus Fomite Survival
How long does Koi Herpes Virus survive on things? Can it dry out and die?

Koi Herpes Virus QnA
Question and Answer format discussion of Koi Herpes Virus.

Stop The Losses From KHV
Control (if not cure) of Koi Herpes Virus. What's so hard to understand? In Israel, to create super-immune fish they required the fish to survive about 21-30 days [with the virus] to create a good immune response. But Koi don't LIVE that long with KHV. So they infected them, and before they'd die, they' heated them to stop the disease. They had to do that three times. First, heat stopped the infection. But that does not prove that the virus died. The FACT that they had to RE-INFECT THEM (instead of letting the virus 'reactivate') suggests BOTH: That the virus DID die or the fish would not need reinfection, and that it was NOT an immune response. (If it was an immune response, they could not be reinfected.)
The pundits have never "gotten" these concepts and hate this article more than anything. They believe that a Herpes virus is required to behave in cold blooded animals the same way it behaves in WARM blooded animals.

HELP! Sick Fish!
Twenty Steps to fish health. You LITERALLY can solve almost any Koi or Pond health outbreak with these twenty diagnostic steps and nothing's hard. But it's not "here's your pill" either. Downloads are available.
More than koi health, this site spans all things animal, by a real veterinarian who shoots you straight.

By Frank Prince-Iles. A UK authority who put this site together some time ago and which is still relied upon as a major source of good Koi and pond fish information

If you need pet information AND Koi pondfish and pond information you might like DrJohnson.com which has everything from pet info, to vet info, to koi and pond fish. It has it ALL! Pet Information.

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